package com.genreate.domain;

import cn.hutool.core.collection.ListUtil;
import cn.hutool.core.lang.Dict;
import cn.hutool.db.PageResult;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;
import java.util.List;

/**
 * 响应信息主体
 *
 * @author xinyin
 */
@Data
@NoArgsConstructor
public class R<T> implements Serializable {
    private static final long serialVersionUID = 1L;

    /**
     * 成功
     */
    public static final int SUCCESS = 200;

    /**
     * 失败
     */
    public static final int FAIL = 500;

    private int code;

    private String msg;

    private T data;

    public static <T> R<T> ok() {
        return restResult(null, SUCCESS, "操作成功");
    }

    public static <T> R<T> ok(T data) {
        return restResult(data, SUCCESS, "操作成功");
    }

    public static <T> R<T> okApp(T data) {
        return restResult(data, 0, "操作成功");
    }

    public static <T> R<T> ok(String msg) {
        return restResult(null, SUCCESS, msg);
    }

    public static <T> R<T> ok(String msg, T data) {
        return restResult(data, SUCCESS, msg);
    }

    public static <T> R<T> fail() {
        return restResult(null, FAIL, "操作失败");
    }

    public static <T> R<T> fail(String msg) {
        return restResult(null, FAIL, msg);
    }

    public static <T> R<T> fail(T data) {
        return restResult(data, FAIL, "操作失败");
    }

    public static <T> R<T> fail(String msg, T data) {
        return restResult(data, FAIL, msg);
    }

    public static <T> R<T> fail(int code, String msg) {
        return restResult(null, code, msg);
    }

    private static <T> R<T> restResult(T data, int code, String msg) {
        R<T> r = new R<>();
        r.setCode(code);
        r.setData(data);
        r.setMsg(msg);
        return r;
    }

    public static Dict getPage(PageResult page) {
        return Dict.create().set("rows", page).set("total", page.getTotal());
    }

    /**
     * 为app提供的返回格式
     *
     * @return {@link R}
     */
    public static R okEmptiy() {
        List<Object> list = ListUtil.list(false);
        R r = new R<>();
        r.setCode(SUCCESS);
        r.setData(list);
        r.setMsg("操作成功");
        return r;
    }

    public static R failEmptiy(String msg) {
        List<Object> list = ListUtil.list(false);
        R r = new R<>();
        r.setCode(FAIL);
        r.setData(list);
        r.setMsg(msg);
        return r;
    }
}